Oil filter choices

Topo66

Piloting Jeeps since '66
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Feb 4, 2019
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Blairsville, GA
Anyone tried the Motorcraft FL 400S [slightly longer] oil filter? 06 LJ 4.0 AT no mods. Trying to improve oil flow while still catching all the gunk and maintaining pressure. I believe it has the same fitment specs as MO 090 with possibly improved flow and larger media surface. Any thoughts or other options.
 
I always ran the FL1A (FL300s I think?) on the 4.0 and 5.9. Only because of price and a little increase in oil capacity. I think the 400 is a little shorter than the 300. Been a while though. Doubt there will be any difference in filtering or flow
 
I use the blue Purolator Pure One PL14670 filter usually. Once I used the longer version PL30001 just for the heck of it. No issues.

The longer one was $3 cheaper than the shorter one at advance auto parts a couple weeks ago when I looked.
 
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The Motorcraft FL300 or the MO-090 are great choices. You don't need extra capacity or filter area. No other filters have the same valve design as the FL1A, FL300 and Mopar filters. I personally wouldn't use them for that reason.
 
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The Motorcraft FL300 or the MO-090 are great choices. You don't need extra capacity or filter area. No other filters have the same valve design as the FL1A, FL300 and Mopar filters. I personally wouldn't use them for that reason.

X2. I have run Mopar on the TJ since 2015.
 
Just my opinion but the minor amount of extra oil capacity is of no benefit. Neither is a larger filter with a larger filter surface area unless you don't change your oil often enough. A larger surface area filters no better than a smaller surface area filter, its only benefit, again, would be if you don't change your filter often enough and the extra filtration area would lengthen the time until it clogs.

Personally, after I visited Fram's R&D facility in Ohio, I switched all of my cars & the Jeep to their Tough Guard which has a 99% filtration efficiency with a very good overall design. I saw it being tested along side more expensive filters and it compared favorably with all of them and better than some that are expensive "prestige" brands. Not to mention many more expensive oil filters only have a 95% filtration efficiency.

What does 95% vs. 99% filtration efficiency mean? It means the filter was able to filter out 95% or 99% of the lab grade precise size test "dirt" added to the oil prior to the efficiency test.
 
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Thanks everybody. Good stuff. I think I am going to do some experimentation. Sounds like I won't be the first.